"If you purchase a nüMaps Lifetime subscription (sold separately) or if your Garmin product comes bundled with a nüMaps Lifetime or other lifetime map subscription, you will receive map data updates when and as such updates are made available on Garmin.com during the useful life of 1 compatible Garmin product or as long as Garmin receives map data from a third party supplier, whichever is shorter."

I got fiber (FIOS) in my rural location about a year ago - now I have 150/150 mbit and it really does clock that fast. I can upload a 1gb video to vimeo in a minute or less. My last North America map update took less than 15 minutes. I think I earned it though after 11 years here with sub-megabit speeds. Map updates used to take all night (if they worked at all). :)